Someone

Checking that ptrace can change system call numbers...OK
Checking syscall emulation patch for ptrace...missing
Checking for tmpfs mount on /dev/shm...OK
Checking PROT_EXEC mmap in /dev/shm/...OK
Checking for the skas3 patch in the host:
  - /proc/mm...not found
  - PTRACE_FAULTINFO...not found
  - PTRACE_LDT...not found
UML running in SKAS0 mode
Checking that ptrace can change system call numbers...OK
Checking syscall emulation patch for ptrace...missing
Linux version 2.6.20.3 (root@blackbox64.cs.jhu.edu) (gcc version 4.1.1 20070105 (Red Hat 4.1.1-51)) #4 Thu Mar 15 20:21:40 EDT 2007
Built 1 zonelists.  Total pages: 16160
Kernel command line: mem=64M ubda=root root=98:0
PID hash table entries: 256 (order: 8, 2048 bytes)
Dentry cache hash table entries: 8192 (order: 4, 65536 bytes)
Inode-cache hash table entries: 4096 (order: 3, 32768 bytes)
Memory: 59136k available
Mount-cache hash table entries: 256
Checking that host ptys support output SIGIO...Yes
Checking that host ptys support SIGIO on close...No, enabling workaround
Using 2.6 host AIO
NET: Registered protocol family 16
NET: Registered protocol family 2
IP route cache hash table entries: 512 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 1024 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 1024)
TCP reno registered
Checking host MADV_REMOVE support...OK
mconsole (version 2) initialized on /root/.uml/5VK4mo/mconsole
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
Initialized stdio console driver
Console initialized on /dev/tty0
Initializing software serial port version 1
 ubda: unknown partition table
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
line_ioctl: tty0: ioctl KDSIGACCEPT called
INIT: version 2.86 booting
Activating swap...done.
EXT3 FS on ubda, internal journal
Setting the system clock..
Cannot access the Hardware Clock via any known method.
Use the --debug option to see the details of our search for an access method.
Cleaning up ifupdown....
Loading kernel modules...FATAL: Could not load /lib/modules/2.6.20.3/modules.dep: No such file or directory
Loading device-mapper support.
Checking file systems...fsck 1.40-WIP (14-Nov-2006)
done.
Setting kernel variables...done.
Mounting local filesystems...done.
Activating swapfile swap...done.
userspace - child stopped with signal 0
Setting up networking...Stub registers -
        0 - 7fff05705098
        1 - 7fff05704f08
        2 - 2aaaaaaaf000
        3 - 788d
        4 - 7fbffffff0
        5 - 7890
        6 - 216
        7 - 0
        8 - 2aaaaaaaffe8
        9 - 7a02
        10 - 7a02
        11 - 7fbfffe022
        12 - 38
        13 - 7fbffff7f8
        14 - 8411
        15 - ffffffffffffffff
        16 - 7fbfffe0c1
        17 - 33
        18 - 202
        19 - 7fbfffffd8
        20 - 2b
Kernel panic - not syncing: copy_context_skas0 : failed to wait for SIGUSR1/SIGTRAP, pid = 31233, n = 31233, errno = 0, status = 0x0

 
Modules linked in:
Pid: 830, comm: S39ifupdown Not tainted 2.6.20.3
RIP: 0033:[<0000000040407f12>] 
RSP: 0000007f7f916130  EFLAGS: 00000246
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: ffffffffffffffff
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000007f7f916180 R08: 000000000000033e R09: 000000000000033e
R10: 000000004001c490 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000005e9d88 R14: 0000000000000000 R15: 00000000ffffffff
Call Trace: 
63c33728:  [<600138bb>] panic_exit+0x2f/0x49
63c33748:  [<60037df7>] notifier_call_chain+0x29/0x3e
63c33778:  [<60037e9c>] atomic_notifier_call_chain+0x9/0xb
63c33788:  [<6002b2fe>] panic+0xe6/0x17d
63c33878:  [<600238f3>] wait_stub_done+0x118/0x12a
63c33968:  [<600240c2>] copy_context_skas0+0x165/0x1f3
63c33c68:  [<60010156>] pte_alloc_one+0x15/0x17
63c33cd8:  [<60013bca>] init_new_context_skas+0x11e/0x16b
63c33d18:  [<600292ac>] dup_mm+0x9c/0x32b
63c33d38:  [<60062ceb>] poison_obj+0x27/0x32
63c33d40:  [<60029f9e>] copy_process+0x586/0xce5
63c33d58:  [<60064422>] cache_alloc_debugcheck_after+0xe5/0x12e
63c33d98:  [<600295bd>] copy_mm+0x82/0xb9
63c33da8:  [<6004881a>] acct_init_pacct+0x18/0x2c
63c33dc8:  [<6002a1d3>] copy_process+0x7bb/0xce5
63c33e38:  [<6002a7e8>] do_fork+0xcc/0x1d7
63c33ec8:  [<60026c38>] sys_clone+0x5d/0x75
63c33ef8:  [<60014111>] handle_syscall+0x65/0x80
63c33f08:  [<60012fa8>] segv_handler+0x68/0x6e
63c33f28:  [<60023a93>] handle_trap+0xd0/0xdb
63c33f68:  [<60023f15>] userspace+0x139/0x181
63c33fc8:  [<60013e3c>] fork_handler+0x73/0x7a